False sill for open-hearth-furnace doors



T. PORTER, DECD. N. PORTER, ADMINISTRATRIX. FALSE SILL FOR OPEN HEARTH FURNACE DOORS APPLICATlON FILED JAN. 10, 192i.

Patented Dec. 6, 1921..

2 SHEETS-SHEET I.

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T. PORTER. DECD.

N. PORTER, ADMINISTRATRIX- FALSE SILL FOR OPEN HEARTH FURNACE DOORS.

APPLICATION FILED JAN. I0. 192! 1,399,51 6.

Patented Dec. 6, 1921.

2 SHEETS-SHEET Z- m IHEIWI A I a I... u.

)Vz'i'nesses:

UNITED STATES THOMAS PORTER, DECEASED, BY NELLIE PORTER, ADIWINIEHPEATEEK, 0F MIFFLIN TOWNSHIP, ALLEGHENY COUNTY, PENNSYLVANIA.

FALSE SILL FOR.OPEN-HEARTI-FFURNACE DOOR-S.

Patented Dec. 6, i921.

Application filed January 10,1921. Serial No. 436,151.

To all whom it may concern:

Be it known that THOMAS PORTER, deceased, did invent certain new and useful Improvements in False Sills for Open Hearth-Furnace Doors, of which the following is a specification.

This invention relates to a false Slll for open hearth furnaces, and oarticularly to a false sill for use with the c arging door of such furnaces.

The invention consists of a cast iron member so constructed that it can be put in place on the permanent door sill, and removed by means of the charging machine peel. The sill is used when charging hot metal into the furnace to prevent the metal from splashlng or overflowing through the door until them heat has settled itself, thus eliminating the danger of burns to workmen.

. Heretofore, door sills of openhearth furnaces have been built up in different ways. One of which has become common, is the use of a pig of iron which was manually lifted and set in position. However, nothing used heretofore had the advantages of the present invention, which may be lifted into place by the peel of the charging machine, which is of such shape and size as to form a perfect fit with the permanent sill, and which is of sufiicient height to form a support for the hot metal spout.

Referring to the drawings, Figure 1 1s a side elevation of a portion of an openhearth furnace, showing the false sill in position.

Fig. 2 is a vertical section on the line 11-11 of Fig. 1, showing the hot metal spout in position to discharge the hot metal.

Fig. 3 is a top plan of the sill.

Fig. 4 is a front elevation thereof.

Fig. 5 is a cross section on the llne V-V of Fig. 4:.

Referring more particularly to the drawings, the letter A designates the open hearth furnace as a whole, which has a charging door opening 2 provided with a permanent rigid metallic sill 3.

The false sill constructed in accordance with this invention is designated as a whole by the letter B, and comprises a substantially rectangular body of cast iron or the like having its front face beveled oif adjacent each end, forming a projection or head portlon a substantially rectangular recess 5 is out in the head portion 4, and opens through the front face of the head. The recess 5 is enlarged to a greater width for a substantial distance from the front face of the head forming shoulder projections 6 and 7 which are flared or beveled at their tops to facilitate the entrance or guide the flanged front end of the charging peel 9 of a charging ma-- chine (not shown). The end of the charging peel 9 is rectangular in outline and is made to fit within the recess 5, so that the sill may be readily handled by the peel. A locking bolt 10 is slidably mounted within the charging peel and is adapted to enter an opening or recess 11 in the rear face of the recess 5 to lock the sill on the peel when it is being placed in osition.

The sill is of slightly greater width than the doorway 2, and is adapted to abut the outer faces of the side walls thereof, and to firmly rest upon the permanent rigid sill 3.

After the sill B is placed in position, the furnace is banked up so as to provide an even and continuous inclined surface from the plane of the upper face of the sill.

When the furnace is ready to receive the charge of molten metal the hot metal spout Y will be positioned so as to rest upon and be supported by the false sill B.

It will be readily seen that by the use of the false sill the capacity of a furnace may be greatly increased without changing its construction.

It will also be seen that the, danger of splashing out or running over of the metal is reduced to a minimum, and therefore, the sill acts as a safeguard for the workers.

What is claimed is-- 1. A false sill as and for the purpose described, comprising a substantially reotangular body portion, and a projecting head portion having a recess therein for the reception of the peel of a charging machine.

2. The combination of an open hearth furnace having a charging door, of a false sill adapted to be detachably mounted in said doorway, said sill comprising a substantially rectangular body portion, and a projecting head portion having a recess therein for the reception of the peel of a charging machine, substantially as shown and described.

3. The combination of an open hearth furnace having a charging door, of a false sill adapted to be detachably mounted in said doorway,said sill comprising a substantially rectangular body portion having its forward face beveled at each end forming a project portion, said head portion being W1th a recess for the reeeptlon or of a oharglng maehlne, sa1d recess ing head provided the peel being enlarged a substantial distance from the forward face of said'head forming shoul ders adapted to engage the peel and hold it in position, said shoulders having their up- 7 In witness whereof, I have hereunto 10 signed my name.

Adonim'stratm'w 0f Porter, deceased.

NELLIE PORTER. the estate of Tho-mas 

